package main

import (
	"strings"
	"fmt"
)

func main()  {
	strArray := []string{"hello", "world", "itcast"}
	result := strings.Join(strArray, "+")
	fmt.Printf("result :%s\n", result)
	result = strings.Join(strArray, "")
	fmt.Printf("result :%s\n", result)
}
